Edexcel Gcse Mathematics Linear 1ma0 Pythagoras Answers

Mr M's Edexcel GCSE Mathematics Linear 1MA0 Higher Tier Paper 2 Answers November 2013

1. Using a calculator

a) 18.75 (2 marks)

b) 20 (1 mark)

2. Katie's sweets

a) 12 (2 marks)

b) 36 (2 marks)

3. Counters

4 (2 marks)

4. Side Elevation

Correct diagram (2 marks)

5. Exchange rates

EITHER HK$325.95 cheaper OR £26.50 cheaper (3 marks)

6. Language school

19 (4 marks)

7. Plants

Small tray (4 marks)

8. Sequences

a) 7n - 4 (2 marks)

b) Yes (it is the 22nd term) (2 marks)

9. Angles in a pattern

115 degrees (4 marks)

10. Music exam

Merit (she got 77.5%) (3 marks)

11. Indices

a) $x^{10}$ (1 mark)

b) $m^{12}$ (1 mark)

c) $\displaystyle \frac{3f^6}{a^4}$ (2 marks)

12. Circle

440 cm (2 marks)

13. Motorway

Lethna is wrong - the journey would take 25 mins 43 seconds at 70 mph (3 marks)

14. Frequency table

a) $20 < T \leq 24$ (1 mark)

b) 18.4 degrees C (4 marks)

c) Correct frequency polygon (2 marks)

15. Pythagoras' Theorem

80.1 cm (3 marks)

16.Equations

a) f = 6.25 (3 marks)

b) h = -0.75 (4 marks)

17. Cubic graph

a) Missing values: -15, 0, -3, 0 (2 marks)

b) Plot graph (2 marks)

18. Isosceles triangle

49.5 (4 marks)

19. Standard form

a) 0.00078 (1 mark)

b) $9.56 \times 10^7$ (1 mark)

20. Reverse percentages

£116 (3 marks)

21. Algebra

a) (1 mark)

b) $\displaystyle m=\frac{g-5}{a+3}$ (3 marks)

22. Trapezium

a) Show quadratic (2 marks)

b) x = 13 (3 marks)

23. Stratified sample

15 (2 marks)

24. Cylinder

14.4 cm (3 marks)

25. Straight lines

They do intersect (3 marks)

26. Cosine Rule

x = 3.73 cm (5 marks)

27. Histogram

12% (3 marks)

28. Circle theorem

Complete proof (3 marks)

Edexcel have asked teachers not to share the link to the paper.

Hey, for 11c would 3a^-4f^6 be acceptable?

Thank you so much sir. Feeling quite confident now that I've looked at the answers. Hopefully I'll get the A* this time. I was 2 marks off an A* in the June 2013 paper

Thanks! I'm unsure with the last question however?

(Original post by MrMathematician)
Hey, for 11c would 3a^-4f^6 be acceptable?

That's what I put

(Original post by MrMathematician)
Hey, for 11c would 3a^-4f^6 be acceptable?

I bet I get asked this repeatedly. Yes.

for question 13 i did 60/26 x 30 to get 69 mph, which is the actual speed needed, so she is worng. is that correct?

What was the answer to the side elevation one and the circle theorem one?

Sir, now that you've seen both papers, do you think the grade boundaries will be higher than the June 2013 grade boundaries (165 - A*)?

(Original post by HeskeyLAD)
Thanks! I'm unsure with the last question however?

There are various ways to do it but the easiest is to use two circle theorems (angles in the same segment and angles in a semicircle) and the RHS rule for congruency.

What was the reverse percentages question?

For 16b, would -6/8 as my final answer give me full marks?
for 27 I wrote as my answer as 3/25 instead of 12% - will I lose a mark?
For 25 would the answer just be 'yes' or would there need to be more to it?
for the final question what would the explanation be?

Also can anyone remember was question 20 was??

Thanks in advance.

(Original post by Zaid-247)
for question 13 i did 60/26 x 30 to get 69 mph, which is the actual speed needed, so she is worng. is that correct?

Yes

(Original post by Basic--Dreams)
Sir, now that you've seen both papers, do you think the grade boundaries will be higher than the June 2013 grade boundaries (165 - A*)?

It might be.

(Original post by MrMathematician)
For 16b, would -6/8 as my final answer give me full marks?
for 27 I wrote as my answer as 3/25 instead of 12% - will I lose a mark?
For 25 would the answer just be 'yes' or would there need to be more to it?
for the final question what would the explanation be?

Also can anyone remember was question 20 was??

Thanks in advance.

16b) yes

27) you *might* lose 1 as it asked for a percentage

25) this has a * next to the question so you need to give full working - the other line is y = 2x + 4 and they intersect at (0, 4).

20) See my next post

(Original post by DazBoy)
What was the reverse percentages question?

In a sale normal prices are reduced by 20%.

A washing machine has a sale price of £464.

By how much money is the normal price of the washing machine reduced?

(Original post by Mr M)
Mr M's Edexcel GCSE Mathematics Linear 1MA0 Higher Tier Paper 2 Answers November 2013

1. Using a calculator

a) 18.75 (2 marks)

b) 20 (1 mark)

2. Katie's sweets

a) 12 (2 marks)

b) 36 (2 marks)

3. Counters

4 (2 marks)

4. Side Elevation

Correct diagram (2 marks)

5. Exchange rates

EITHER HK$325.95 cheaper OR £26.50 cheaper (3 marks)

6. Language school

19 (4 marks)

7. Plants

Small tray (4 marks)

8. Sequences

a) 7n - 4 (2 marks)

b) Yes (it is the 22nd term) (2 marks)

9. Angles in a pattern

115 degrees (4 marks)

10. Music exam

Merit (she got 77.5%) (3 marks)

11. Indices

a) $x^{10}$ (1 mark)

b) $m^{12}$ (1 mark)

c) $\displaystyle \frac{3f^6}{a^4}$ (2 marks)

12. Circle

440 cm (2 marks)

13. Motorway

Lethna is wrong - the journey would take 25 mins 43 seconds at 70 mph (3 marks)

14. Frequency table

a) $20 < T \leq 24$ (1 mark)

b) 18.4 degrees C (4 marks)

c) Correct frequency polygon (2 marks)

15. Pythagoras' Theorem

80.1 cm (3 marks)

16.Equations

a) f = 6.25 (3 marks)

b) h = -0.75 (4 marks)

17. Cubic graph

a) Missing values: -15, 0, -3, 0 (2 marks)

b) Plot graph (2 marks)

18. Isosceles triangle

49.5 (4 marks)

19. Standard form

a) 0.00078 (1 mark)

b) $9.56 \times 10^7$ (1 mark)

20. Reverse percentages

£116 (3 marks)

21. Algebra

a) (1 mark)

b) $\displaystyle m=\frac{g-5}{a+3}$ (3 marks)

22. Trapezium

a) Show quadratic (2 marks)

b) x = 13 (3 marks)

23. Stratified sample

15 (2 marks)

24. Cylinder

14.4 cm (3 marks)

25. Straight lines

They do intersect (3 marks)

26. Cosine Rule

x = 3.73 cm (5 marks)

27. Histogram

12% (3 marks)

28. Circle theorem

Complete proof (3 marks)

Edexcel have asked teachers not to share the link to the paper.

Sir, what mark do you think you need to get at least a B?